9th Class Physics Chapter 5 TestWork, Energy and Power

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Resources of energy which are replaced by new ones after their use are called:

   1. Non-renewable energy

   2. Renewable energy sources

   3. Natural energy sources

   4. Fossil fuels

2. A body of mass 2 kg is placed on the table 100 cm high, the value of its kinetic energy is:

   1. 50 joule

   2. 40 joule

   3. 400 joule

   4. zero joule

3. The world solar challenge race in:

   1. Dubai (1994)

   2. France (1998)

   3. Darwin, Australia (1993)

   4. Nepal (1992)

4. Hot rocks are present in the semi molten form deep under the surface of the Earth have temperature is:

   1. 150^oC

   2. 200^oC

   3. 250^oC

   4. 300^oC

5. The direct combustion is method in which biomass, commonly called:

   1. Salter's duck

   2. Solid waste

   3. Digester

   4. None

6. The average efficiency of diesel engine:

   1. 15

   2. 85

   3. 35

   4. None

7. Which of the following is pollution free source of energy?

   1. Solar energy

   2. Wind energy

   3. Tidal energy

   4. All of above

8. One mega Joule is equal to:

   1. 

   2. 

   3. 

   4. 

9. The rate of doing work:

   1. Work

   2. Force

   3. Newton

   4. Power

10. The ability of body to do work:

    1. Energy

    2. Force

    3. Displacement

    4. None